ZIMMERMANN, Gunther. Simultaneous Determinations of Longitude and Latitude in Africa with the Prismatic Astrolabe. The International Hydrographic Review, [S. l.], v. 44, n. 2, 2015. Disponível em: https://journals.lib.unb.ca/index.php/ihr/article/view/24006. Acesso em: 2 jun. 2024.